1996 ram b 2500 full size van. just had transmission rebuilt about 1 year ago and worked fine for a while. then shortley after I put a rebuilt engine (318) in about 30 days it would not shift into over drive. now it starts in 2nd and and hit 3rd but not 1st or 4th(over drive)
any ideas??
thanks in advanced
jason

 

have you checked the fluid level?

 

fluid is fine although before this started i had to replace a hose that was leaking. then i got the problem. i went to advance auto and had them check the codes and this is what it came up with. po743-torque convertor clutch solenoid... po748-governor pressure solenoid circuit...po753-overdrive solenoid circuit. any idea what i need to do next?

 

take the thing to a trans shop and have them take a look see, the cost of a another rebulid is not cheap as you know. or a trans in that matter.

 

Have some one look at the passing gear, or kick down to see if its working properly. I'm guessing its vacuum ran but it may be the problem, also the shifter may have never been reinstalled corectly. Just things to check out.